brendend

hey guys, i used the search but for somereason it didnt find anything. hes want to know the max power and boost a stock 4.6 2v can handel

defconfire

450 rwhp is when stuff breaks. Stay at or just under 400 hp and you'll be safe.

Eagle2000GT

The higher you push it, the more likely it will break. With a centrifical supercharger 8 psi of boost on a car with a manual transmission will end up about 350-370 rwhp (400-420 crank hp) depending upon other supporting mods. 10 psi will get you near 400 rwhp (approx. 450 crank hp). If the car is a daily driver you should keep it around 370-380 rwhp. Being safe at these levels is all in the tune.

Automatics have more parasitic loss through the drive train and will run about 30-35 rwhp lower but have the same horsepower at the crank.

The stock motor can handle more if it has other supporting mods (not just boost). My tuner said he knows of two that have been at 420 rwhp for two years. I've heard the 450 rwhp number mentioned a lot but I haven't heard of anyone running at that level for any length of time.

oxwhitegt03

dont wanna steal the thread but does this also include the rear end and t-5,or t-3650 i was curious to see what they could handle,interested in procharger shouldnt strain to hard cuz its a centri

defconfire

I wonder why??? lol

Eagle2000GT

As long as you're running street tires, yes. I've heard of people breaking axles with slicks on cars with just bolt-ons. I've got about 25,000 miles on mine with a completely stock drive train.